نبذة مختصرة : In traditional taxonomy, species are differentiated using morphological arguments, which can be subjective and cause confusion particularly when the initial species descriptions have been inadequate. The development of DNA-based methods has provided more objective tools to recognize and quantify species differences, as well as enabled the detection of cryptic that is morphologically indistinguishable, species. Conversely, we show here that large-scale, genome-wide analysis of 11 427 loci and 65 825 SNPs is mostly unable to differentiate between many of the currently valid Palearctic species of bug-killing parasitoid flies in the genus Gymnosoma Meigen (Diptera: Tachinidae), despite the proposed morphological differences. We conclude that alongside a few well-defined taxa with discrete morphological features and unique DNA barcodes, Palearctic Gymnosoma is likely to contain a single, highly variable and geographically widespread species.
Rights: info:eu-repo/semantics/openAccess ; © 2020 Royal Entomological Society. This is the peer reviewed version of the following article: Lee, K.M., Zeegers, T., Mutanen, M. and Pohjoismäki, J. (2021), The thin red line between species – genomic differentiation of Gymnosoma Meigen, a taxonomically challenging genus of parasitoid flies (Diptera: Tachinidae). Syst Entomol, 46: 96-110, which has been published in final form at https://doi.org/10.1111/syen.12450. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. This article may not be enhanced, enriched or otherwise transformed into a derivative work, without express permission from Wiley or by statutory rights under applicable legislation. Copyright notices must not be removed, obscured or modified. The article must be linked to Wiley’s version of record on Wiley Online Library and any embedding, framing or otherwise making available the article or pages thereof by third parties from platforms, services and websites other than Wiley Online Library must be prohibited.
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